In the digital era, using information technology to search valuable information is one of the important skills. Taipei City Government set up Easy Teaching Web of Taipei, integrates scattered knowledge in the field of education and human resources, and build a knowledge-sharing platform for teachers. However, it is still important to understand how to improve the usage of Easy Teaching Web of Taipei to teachers. This research applied the Technology Acceptance Model as research foundation, and the Information Systems Success Model was also considered as impact factor in this research, to understand the teachers to the satisfaction of the digital platform. There are 318 valid samples by random selected from members to fill out a developed pencil-paper questionnaire. The multiple-regression was used for data analysis, the empirical results lead to four conclusions. First, Information Quality (IQ) can predict Perceived Usefulness (PU) and Perceived Ease of Use (PEOU). Second, System Quality (SQ) can predict PU and PEOU. Third, PEOU can predict PU and Attitude toward using (ATU). Fourth, ATU can predict User Satisfaction (US). According to research finding that Easy Teaching Web can promote the user satisfaction by improve easy use of the system.